Tree View Sample

Compiling

To compile the example:

• Launch EiffelStudio.
• Select Use existing Ace (control file) and click OK.
• Browse to Eiffel52\examples\wel\tree_view\.
• Choose Ace.ace
• Choose the directory where the project will be compiled, by default the same directory containing the Ace file. If you select another directory than the default one, please copy images (*.bmp), icons (*.ico) and resource files (*.rc) from the default directory (the one containing the Ace file) to the new one.
• Click OK.

Running

After launching the program, a window will be displayed as illustrated above. Selecting or expanding one of the tree items will cause notification to be displayed in the list at the top of the window. Various other notifications are also displayed, such as pressing a key in the tree.

Under the Hood

TREEVIEW inherits WEL_TREE_VIEW and redefines make to initialize items within the tree. A WEL_TREE_VIEW_INSERT_STRUCT is used to insert each WEL_TREE_VIEW_ITEM while a WEL_IMAGE_LIST is used to reference images within the tree.

This sample contains the following classes:

• TREEVIEW
• MAIN_WINDOW
• TREEVIEW_DEMO
• APPLICATION_IDS

See Also
WEL_TREE_VIEW